Condensed Consolidating Financial Information - Condensed Consolidated Statements of Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Comprehensive Income (Loss) [Line Items]
Net income	$ 28,663	$ 25,703	$ 35,767	$ 79,317
Other comprehensive income (loss):
Unrealized gain on interest rate swap	1,136	182	2,342	2,788
Foreign currency translation gain (loss)	(1,319)		(1,273)
Total comprehensive income	28,480	25,885	36,836	82,105
Comprehensive income attributable to non-controlling interests	(126)	(55)	(192)	(165)
Comprehensive income attributable to MPT common stockholders	28,354	25,830	36,644	81,940
Unrealized gain on interest rate swap	1,136	182	2,342	2,788
Total comprehensive income	28,480	25,885	36,836	82,105
Comprehensive income attributable to non-controlling interests	(126)	(55)	(192)	(165)
Comprehensive income attributable to MPT common stockholders	28,354	25,830	36,644	81,940
Eliminations [Member]
Comprehensive Income (Loss) [Line Items]
Net income	(80,340)	(74,794)	(145,246)	(221,413)
Other comprehensive income (loss):
Unrealized gain on interest rate swap	(1,136)	(182)	(2,342)	(2,788)
Foreign currency translation gain (loss)	1,319		1,273
Total comprehensive income	(80,157)	(74,976)	(146,315)	(224,201)
Comprehensive income attributable to non-controlling interests	126	55	192	165
Comprehensive income attributable to MPT common stockholders	(80,031)	(74,921)	(146,123)	(224,036)
Unrealized gain on interest rate swap	(1,136)	(182)	(2,342)	(2,788)
Total comprehensive income	(80,157)	(74,976)	(146,315)	(224,201)
Comprehensive income attributable to non-controlling interests	126	55	192	165
Comprehensive income attributable to MPT common stockholders	(80,031)	(74,921)	(146,123)	(224,036)
Parent [Member]
Comprehensive Income (Loss) [Line Items]
Net income	28,663	25,703	35,767	79,317
Other comprehensive income (loss):
Unrealized gain on interest rate swap	1,136	182	2,342	2,788
Foreign currency translation gain (loss)	(1,319)		(1,273)
Total comprehensive income	28,480	25,885	36,836	82,105
Comprehensive income attributable to non-controlling interests	(126)	(55)	(192)	(165)
Comprehensive income attributable to MPT common stockholders	28,354	25,830	36,644	81,940
Unrealized gain on interest rate swap	1,136	182	2,342	2,788
Total comprehensive income	28,480	25,885	36,836	82,105
Comprehensive income attributable to non-controlling interests	(126)	(55)	(192)	(165)
Comprehensive income attributable to MPT common stockholders	28,354	25,830	36,644	81,940
Subsidiary Issuers [Member]
Comprehensive Income (Loss) [Line Items]
Net income	28,663	25,703	35,767	79,317
Other comprehensive income (loss):
Unrealized gain on interest rate swap	1,136	182	2,342	2,788
Foreign currency translation gain (loss)	(1,319)		(1,273)
Total comprehensive income	28,480	25,885	36,836	82,105
Comprehensive income attributable to non-controlling interests	(126)	(55)	(192)	(165)
Comprehensive income attributable to MPT common stockholders	28,354	25,830	36,644	81,940
Unrealized gain on interest rate swap	1,136	182	2,342	2,788
Total comprehensive income	28,480	25,885	36,836	82,105
Comprehensive income attributable to non-controlling interests	(126)	(55)	(192)	(165)
Comprehensive income attributable to MPT common stockholders	28,354	25,830	36,644	81,940
Subsidiary Guarantors [Member]
Comprehensive Income (Loss) [Line Items]
Net income	52,448	44,392	133,374	128,333
Other comprehensive income (loss):
Total comprehensive income	52,448	44,392	133,374	128,333
Comprehensive income attributable to MPT common stockholders	52,448	44,392	133,374	128,333
Total comprehensive income	52,448	44,392	133,374	128,333
Comprehensive income attributable to MPT common stockholders	52,448	44,392	133,374	128,333
Non-Guarantor Subsidiaries [Member]
Comprehensive Income (Loss) [Line Items]
Net income	(771)	4,699	(23,895)	13,763
Other comprehensive income (loss):
Total comprehensive income	(771)	4,699	(23,895)	13,763
Comprehensive income attributable to MPT common stockholders	(771)	4,699	(23,895)	13,763
Total comprehensive income	(771)	4,699	(23,895)	13,763
Comprehensive income attributable to MPT common stockholders	$ (771)	$ 4,699	$ (23,895)	$ 13,763